Soap And Detergents

Soap is composed of salt, alkaline and fats and Detergents are alkylbenzenesulfonates which make more soluble in hard water than the soap. Soap is made through adding liquid alkali to heated fats or oil. Detergents are made from surfactants that cleans better than soap in hard water, it also contains enzymes, bleaches and blue dye. …

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Who Discovered Ink And Other Writing Methods

There was no alternatives for the cavemen than carving the stones to get their drawings, but when the ink was invented it gave a huge push to writing. The papyrus was the first papers invented by the Egyptians followed by the Chinese papers, while the ink appeared in China first then followed bu the Egyptian. …

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Who Invented The Elevator?

The first mention of the closest thing to elevators were cabs in the monastery in Sinai, Egypt. The cabs moved using ropes that were pulled by hands. Archimedes of Syracuse (287B.C.-212 B.C.), the Greek engineer, mathematician, physicist and inventor was the first to built an elevator by the year 236 B.C.. Konrad Kyeser (1366-1405), the …

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Who Invented Toothbrush And Toothpaste?

The first toothpaste was mentioned in the papyrus of the Ancient Egyptians in the 4th century. The toothpaste was used to get white teeth, the toothpaste consisted from soot, gum and water. Romans in the 9th century added crushed bones or oyster shells in order to get more whiter teeth. Ziryab (789-857), improved the toothpaste …

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